![]() The boiler which produce steam at pressures of 80 bar and above areĮxamples: Babcock and Wilcox, Velox,Lamomt,Benson Boiler etc. Place due to natural convention currents produced by the application ofĮxamples: Lancashire, Babcock and Wilcox boiler etc.ĥ.Higher Pressure and Low Pressure Boilers ![]() In natural circulation type of boilers, circulation of water in the boiler takes In forced circulation type of boilers, the circulation of water is done by aĮxamples: Velox,Lamomt,Benson Boiler etc. ![]() In case of internally fired boilers, the furnace is located inside the shell.Įxamples: Cochran, Lancashire boiler etc.Ĥ.Forced circulation and Natural Circulation The boiler is known as externally fired if the fire is outside the shell.Įxamples: Babcock and Wilcox boiler,Stirling boiler etc. In the water tube boilers, the water is inside the tubes and hot gases surround them. In the fire boilers, the hot gases are inside the tubes and the water surrounds the tubes.Įxamples: Cochran, Lancashire and Locomotive boilers. ![]() If the axis of the boiler is horizontal,the boiler is called horizontal, if the axis is vertical, it is called verticalboiler and if the axis is inclined it is called as inclined boiler.The parts of horizontal boiler is can be inspected and repaired easily but it occupies more space.The vertical boiler occupies less floor area. 1.Horizontal, Vertical or Inclined Boiler.
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